Electrolyte containing a crosslinked compound having ether linkages and a high-molecular compound

Abstract

A negative electrode ( ) and a positive electrode ( ) are arranged facing each other with an electrolyte ( ) set between. The electrolyte ( ) is obtained through polymerizing compounds for an electrolyte including compounds having ether linkages and functional groups capable of forming crosslinks, a siloxane derivative, and lithium salt. The compounds having ether linkages and functional groups capable of forming crosslinks form a three-dimensional network structure by polymerization. The siloxane derivative and lithium salt are compatible with the structure. This maintains high ability to be formed a film of great film strength, while increasing ion conductivity.